CN114130822A - Rolling efficiency improving method of stainless steel thick-specification cold plate uncoiler - Google Patents
Rolling efficiency improving method of stainless steel thick-specification cold plate uncoiler Download PDFInfo
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- CN114130822A CN114130822A CN202111365302.5A CN202111365302A CN114130822A CN 114130822 A CN114130822 A CN 114130822A CN 202111365302 A CN202111365302 A CN 202111365302A CN 114130822 A CN114130822 A CN 114130822A
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- strip
- rolling
- steel
- jaw
- coiling machine
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- 238000005096 rolling process Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 16
- 239000010935 stainless steel Substances 0.000 title claims abstract description 16
- 230000002441 reversible effect Effects 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 36
- 239000010959 steel Substances 0.000 claims description 36
- 238000004804 winding Methods 0.000 claims description 10
- 238000005097 cold rolling Methods 0.000 abstract description 2
- 241001061132 Eutaeniophorus sp. 033-Miya Species 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 241000277275 Oncorhynchus mykiss Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0057—Coiling the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0064—Uncoiling the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0071—Levelling the rolled product
Abstract
The invention relates to a reversible cold rolling method for a stainless steel thick cold plate, and a rolling efficiency improving method for a stainless steel thick cold plate uncoiler, which comprises the following steps: the method comprises the steps of firstly, material overlapping and tape threading, secondly, accurately controlling the position of a tape tail and a jaw of a coiling machine, and thirdly, carrying out minimum rolling and coiling. By adopting the method, the problem of low rolling efficiency of the 400-series stainless steel thick-specification cold plate uncoiler is successfully solved, and the rolling efficiency is improved by 30-40%.
Description
Technical Field
The invention relates to reversible cold rolling of a stainless steel thick-specification cold plate, mainly relates to uncoiler rolling of a 400-series stainless steel cold plate with the thickness of more than or equal to 1.0mm, and particularly relates to an operation method for improving the rolling efficiency of the uncoiler for the 400-series stainless steel thick-specification cold plate.
Background
The 400 series stainless steel thick-specification cold plate is a main production variety of the Tai steel, has the advantages of good corrosion resistance, good ductility, good surface quality, high dimensional precision and the like, is widely applied to industries such as architectural decoration, household appliances, household appliance parts and the like, has high additional profit and increased market demand year by year, but has extremely high surface requirements of customers on the product and brings challenges to the control level of a production enterprise. The 400 series stainless steel thick cold plate is mostly rolled by adopting a Sendzimir twenty-high roll mill, and is rolled by adopting an uncoiler for the first pass, and the other passes are reversible rolling. The rolling efficiency of 400 is stainless steel is mainly influenced by quality control factors, the surface hardness is low, after the first-pass uncoiler is rolled, the second pass is to be reversely coiled on the coiler, the head and tail surfaces of strips are formed to scratch and accumulate lumps, the roll surface of a roll is contused and the like in the process, more roll marks are formed in the rolling process, the roll changing frequency is greatly increased, the rolling efficiency is seriously influenced, the rolling efficiency is improved while the surface quality of products is ensured, and the method convenient for field operation is urgently needed to be provided for quickly and effectively solving the problem.
Disclosure of Invention
The invention aims to solve the problems and provides a method for improving the rolling efficiency of a stainless steel thick-specification cold plate uncoiler.
The purpose of the invention is realized as follows: the method for improving the rolling efficiency of the stainless steel thick-specification cold plate uncoiler comprises the following steps:
first step, "material loading and threading": an operator decoils and threads the steel coil of the decoiler, sends the strip head of the strip steel to the tail of a coil of strip steel on the left-side coiling machine, and selects the decoiler, the straightening machine, the rolling mill and the right-side coiling machine to jointly move, so that the two coils of strip steel synchronously run, and strip threading is quickly realized.
Secondly, "accurately control the position of the strip tail and the jaw of the coiling machine": and (3) stopping the first-time steel belt tail rolling to a position 0-10cm away from the jaw of the left-side coiling machine, rotating the winding drum anticlockwise, enabling the steel belt to enter the jaw, expanding the winding drum, and realizing the biting of the steel belt into the jaw.
Third step, "minimum rolling and winding method": and before reverse coiling is carried out after the jaw is needed, selecting a minimum rolling mode for a pressure mode, and selecting a combined inching mode of a rolling mill, a left coiling machine and a right coiling machine to realize reverse coiling.
Further, in the first step, the strip head of the strip steel is sent to a strip tail on a left coiling machine, and the strip head and the strip tail are overlapped for 1-2 meters.
The invention has the beneficial effects that:
1. by the method of material overlapping and strip threading, strip threading can be completed by the strip steel quickly passing through a rolling mill, the linear speed of equipment and the strip steel is ensured to be consistent, the strip threading and scratching are avoided, and the production rhythm is accelerated;
2. by the method of accurately controlling the positions of the strip tail and the jaw of the coiling machine, the dragging of the steel strip in the process of the strip steel entering the jaw can be avoided, and a basic guarantee is provided for minimum rolling coiling;
3. the linear speed of the roller and the steel strip synchronously rotate by a minimum rolling and coiling method, so that the relative sliding damage of the steel strip and the roller is avoided, and repeated operations of rolling, rolling line and eccentricity are reduced.
By adopting the method, the problem of low rolling efficiency of the 400-series stainless steel thick-specification cold plate uncoiler is successfully solved, and the rolling efficiency is improved by 30-40%.
Detailed Description
Compared with a coiler rolling mode, after the first pass of the uncoiler rolling mode is finished, strip steel is separated from the uncoiler and reversely coiled to the coiler to be subjected to subsequent reversible rolling, the strip steel cannot accurately enter the coiler due to equipment reasons and operation method problems in the process, the strip steel and a working roll are twisted relatively and damaged mutually in the reverse coiling process, in order to avoid the damage, the operation mode of pulling the roll in advance and then loading the working roll after reverse coiling is adopted, the rolling efficiency is reduced, and an operation method which can avoid the damage and can quickly reverse coiling is urgently needed to be provided.
The first step, material lapping and threading, is that an operator decouples and threads the steel coil of the decoiler, sends the strip head of the strip steel to the tail of a coil of the left coiler, overlaps the material by about 1-2 meters, and selects the decoiler, the straightener, the rolling mill and the right coiler to jointly move, so that the two coils of strip steel synchronously run, and the strip threading is quickly realized.
And secondly, precisely controlling the position of the strip tail and the jaw of the coiling machine, stopping the steel strip at a position which is 0-10cm away from the jaw of the coiling machine on the left side after the strip tail of the first time is rolled, rotating the winding drum anticlockwise, enabling the steel strip to enter the jaw, expanding the winding drum, and realizing the biting of the steel strip into the jaw.
And thirdly, selecting a pressure mode as a minimum rolling (100 tons) mode and selecting a combined inching mode of a rolling mill, a left coiling machine and a right coiling machine to realize reverse coiling before reverse coiling after the jaw is needed.
Examples
The twenty-high Sendzimir rolling mill rolls a coil of 430-grade 2B plate with the specification of 3.0 x 1250mm, the 6.0mm rolling mill rolls the plate with the specification of 3.0mm, the rolling passes are 5, and the plate is rolled by an uncoiler.
The first step, lapping and threading, is that an operator unpacks and threads steel coils of an uncoiler, sends strip steel heads to the tail of a coil of strip on a coiling machine on the left side, overlaps the materials for 2 meters, and selects the uncoiler, a straightening machine, a rolling mill and a coiling machine on the right side to jointly move, so that two coils of strip steel synchronously run, and the threading is quickly realized.
And secondly, precisely controlling the position of the strip tail and the jaw of the coiling machine, stopping the steel strip at the position 5cm away from the jaw of the coiling machine on the left side after the strip tail of the first-pass rolling, rotating the winding drum anticlockwise, enabling the steel strip to enter the jaw, expanding the winding drum, and realizing the biting of the steel strip into the jaw.
And thirdly, selecting a pressure mode as a minimum rolling (100 tons) mode and selecting a combined inching mode of a rolling mill, a left coiling machine and a right coiling machine to realize reverse coiling before reverse coiling after the jaw is needed. And the start rolling is realized within 5s after the minimum rolling rapid reverse coiling.
No quality problem occurs in the rolling process, the rolling process is efficient, and the stability reaches the expected effect.
The above description is only an embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.
Claims (2)
1. The method for improving the rolling efficiency of the stainless steel thick cold plate uncoiler is characterized by comprising the following steps of: the method comprises the following steps:
first step, "material loading and threading": an operator decoils and threads a steel coil of the decoiler, sends a strip head of the strip steel to a strip tail on the left coiling machine, and selects the decoiler, the straightening machine, the rolling mill and the right coiling machine to jointly move in a inching mode, so that two coils of strip steel synchronously run, and strip threading is quickly realized;
secondly, "accurately control the position of the strip tail and the jaw of the coiling machine": stopping the first-pass steel belt tail rolling to a position 0-10cm away from the jaw of the left-side coiling machine, rotating the winding drum anticlockwise, enabling the steel belt to enter the jaw, expanding the winding drum, and enabling the steel belt to bite into the jaw;
third step, "minimum rolling and winding method": and before reverse coiling is carried out after the jaw is needed, selecting a minimum rolling mode for a pressure mode, and selecting a combined inching mode of a rolling mill, a left coiling machine and a right coiling machine to realize reverse coiling.
2. The rolling efficiency improving method of the stainless steel thick specification cold plate uncoiler according to claim 1, characterized by comprising the following steps: in the first step, the strip head of the strip steel is sent to a strip tail on a left coiling machine, and the strip head and the strip tail are overlapped for 1-2 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111365302.5A CN114130822A (en) | 2021-11-18 | 2021-11-18 | Rolling efficiency improving method of stainless steel thick-specification cold plate uncoiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111365302.5A CN114130822A (en) | 2021-11-18 | 2021-11-18 | Rolling efficiency improving method of stainless steel thick-specification cold plate uncoiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114130822A true CN114130822A (en) | 2022-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111365302.5A Pending CN114130822A (en) | 2021-11-18 | 2021-11-18 | Rolling efficiency improving method of stainless steel thick-specification cold plate uncoiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114130822A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH091222A (en) * | 1995-06-15 | 1997-01-07 | Nisshin Steel Co Ltd | Equipment and method for rolling strip metal |
| CN102205348A (en) * | 2010-03-30 | 2011-10-05 | 上海梅山钢铁股份有限公司 | Control method for stopping reversible cold-rolling mill |
| CN102240676A (en) * | 2011-05-11 | 2011-11-16 | 北京科技大学 | Rolling device for preparing high-toughness high-formability magnesium alloy sheet strip coil |
| CN202877233U (en) * | 2012-05-09 | 2013-04-17 | 中国重型机械研究院有限公司 | Reversible cold rolling unit used for rolling plain carbon steel and stainless steel in mixed mode |
| CN103386420A (en) * | 2013-07-26 | 2013-11-13 | 山西太钢不锈钢股份有限公司 | Cold-rolling strip steel threading method |
| CN105080967A (en) * | 2015-09-29 | 2015-11-25 | 山东钢铁股份有限公司 | Secondary rolling method of broken belt roll of single-rack reversible cold rolling mill |
| CN105478473A (en) * | 2015-12-25 | 2016-04-13 | 中冶南方工程技术有限公司 | First-pass closed roll gap tail-swing rolling method for reversible cold rolling mill |
| CN205673860U (en) * | 2016-02-05 | 2016-11-09 | 山西工程职业技术学院 | Impart knowledge to students and test unit with multi-functional single stand four-roller reversible cold rolling |
| CN106623448A (en) * | 2017-02-22 | 2017-05-10 | 首钢京唐钢铁联合有限责任公司 | Method for preventing scratches of working roll |
| CN109692871A (en) * | 2019-01-15 | 2019-04-30 | 顾溢芯 | A kind of rolling system that cold rolling is rolled up end to end |
| CN110355206A (en) * | 2019-05-31 | 2019-10-22 | 江苏省沙钢钢铁研究院有限公司 | A kind of device and production method improving reversable mill lumber recovery |
| CN112139286A (en) * | 2020-08-24 | 2020-12-29 | 湖南华菱涟源钢铁有限公司 | Method for preventing steel coil inner ring from being scratched by crimping machine jaw |
| CN112474817A (en) * | 2020-11-16 | 2021-03-12 | 山西太钢不锈钢股份有限公司 | Method for controlling surface short wiping white mark defects of 430-series thick cold plate |
| CN113020267A (en) * | 2021-02-01 | 2021-06-25 | 中国重型机械研究院股份公司 | Automatic ending system and method for strip jaw coiling unit |
-
2021
- 2021-11-18 CN CN202111365302.5A patent/CN114130822A/en active Pending
Patent Citations (14)
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| JPH091222A (en) * | 1995-06-15 | 1997-01-07 | Nisshin Steel Co Ltd | Equipment and method for rolling strip metal |
| CN102205348A (en) * | 2010-03-30 | 2011-10-05 | 上海梅山钢铁股份有限公司 | Control method for stopping reversible cold-rolling mill |
| CN102240676A (en) * | 2011-05-11 | 2011-11-16 | 北京科技大学 | Rolling device for preparing high-toughness high-formability magnesium alloy sheet strip coil |
| CN202877233U (en) * | 2012-05-09 | 2013-04-17 | 中国重型机械研究院有限公司 | Reversible cold rolling unit used for rolling plain carbon steel and stainless steel in mixed mode |
| CN103386420A (en) * | 2013-07-26 | 2013-11-13 | 山西太钢不锈钢股份有限公司 | Cold-rolling strip steel threading method |
| CN105080967A (en) * | 2015-09-29 | 2015-11-25 | 山东钢铁股份有限公司 | Secondary rolling method of broken belt roll of single-rack reversible cold rolling mill |
| CN105478473A (en) * | 2015-12-25 | 2016-04-13 | 中冶南方工程技术有限公司 | First-pass closed roll gap tail-swing rolling method for reversible cold rolling mill |
| CN205673860U (en) * | 2016-02-05 | 2016-11-09 | 山西工程职业技术学院 | Impart knowledge to students and test unit with multi-functional single stand four-roller reversible cold rolling |
| CN106623448A (en) * | 2017-02-22 | 2017-05-10 | 首钢京唐钢铁联合有限责任公司 | Method for preventing scratches of working roll |
| CN109692871A (en) * | 2019-01-15 | 2019-04-30 | 顾溢芯 | A kind of rolling system that cold rolling is rolled up end to end |
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| CN112474817A (en) * | 2020-11-16 | 2021-03-12 | 山西太钢不锈钢股份有限公司 | Method for controlling surface short wiping white mark defects of 430-series thick cold plate |
| CN113020267A (en) * | 2021-02-01 | 2021-06-25 | 中国重型机械研究院股份公司 | Automatic ending system and method for strip jaw coiling unit |
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